Title:
粘度指数向上剤並びに潤滑油組成物
Document Type and Number:
Japanese Patent JP6682302
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lubricant composition based on a viscosity index improver containing a polymer which has a high viscosity index and good shear stability and exhibits sufficient solubility in a lubricant base oil.SOLUTION: The viscosity index improver contains a polymer comprising a unit represented by general formula (1) as an essential constitutional unit, where the weight average molecular weight (Mw) of the polymer is greater than or equal to 20000 and less than 500000. The lubricant composition contains a lubricant and the viscosity index improver.SELECTED DRAWING: None
Inventors:
Kazunari Yasumura
Keiko Izumi
Takehiko Morita
Okamoto Daiji
Yohei Imaizumi
Keiko Izumi
Takehiko Morita
Okamoto Daiji
Yohei Imaizumi
Application Number:
JP2016045112A
Publication Date:
April 15, 2020
Filing Date:
March 09, 2016
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
C10M149/10; C08F220/18; C08F220/40; C10M145/14
Domestic Patent References:
| JP8176576A | ||||
| JP2014205858A | ||||
| JP2015160951A |
Attorney, Agent or Firm:
Asfi International Patent Office